linux-kernel - [PATCH] sound: usb/quirks, fix out-of-bounds access

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Message-Id: <1361107984-25163-1-git-send-email-jslaby@suse.cz>
Date:	Sun, 17 Feb 2013 14:33:04 +0100
From:	Jiri Slaby <jslaby@...e.cz>
To:	tiwai@...e.de
Cc:	perex@...ex.cz, jirislaby@...il.com, linux-kernel@...r.kernel.org,
	Damien Zammit <damien@...audio.com>
Subject: [PATCH] sound: usb/quirks, fix out-of-bounds access

bootresponse in snd_usb_mbox2_boot_quirk is only 12 (decimal) u8's
long, but i9s passed to snd_usb_ctl_msg as it would be 0x12 (hexa)
long. Fix that by having proper size of the array, i.e. 0x12.

Signed-off-by: Jiri Slaby <jslaby@...e.cz>
Cc: Damien Zammit <damien@...audio.com>
Cc: Takashi Iwai <tiwai@...e.de>
---
 sound/usb/quirks.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 2c97185..0115289 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -533,7 +533,7 @@ static int snd_usb_mbox2_boot_quirk(struct usb_device *dev)
 {
 	struct usb_host_config *config = dev->actconfig;
 	int err;
-	u8 bootresponse[12];
+	u8 bootresponse[0x12];
 	int fwsize;
 	int count;
 
-- 
1.8.1.2


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